Kymco Motorcycles - Page 8 - Recent Questions, Troubleshooting & Support

Yes a new piston and a rebore of the cylinder if that is the problem. You will need to tear it down to inspect what caused the problem.

Use a numbered drill set, measure the jet size using the drill bit set, then select a drill bit two numbered sizes larger and drill out the main jet, that should get you in the ball park. Here is a link to a numbered Drill bit set. 60 Pc Titanium Nitride Coated High Speed Steel Numbered Drill Bit Set

Some scooters seat latches operate with the ignition key switch.
Turn it left and right as you lift the seat.
Sometime you have to push down on the seat while you turn the key
Some have a key right on the left side of the bike for the seat latch.

If you have no key, you can pull off the rear rack and then take off the plastics above the tail light.
Once that plastic is off you can reach the latch with a screwdriver or needle nose pliers.

Actually it looks interesting, however one reviewer said its not Chinese but Taiwanese. That is the part of China that has separated itself. As far as I am concerned the machine is still of a chinese extraction and seeing as many yamaha parts come from Taiwan. I shall have to dig deeper!

A clicking starter solenoid is usually caused by a discharged or defective battery. I would charge the battery and check the connections. The battery voltage should remain above 10 volts WHILE CRANKING.